Where Old Wiring Went to Die.

Commissioned to clear up unused cabling from the ceilings of an old car dealership, I found:

Cat5e

Cat 5

Cat 3

4-pair 24 gauge

Thin Net Coaxial Cable

Flat 2 pair telephone

Round 2 pair telephone

2 pair twisted & sheilded terinated in a 25 pin D-sheild

Cat5 connected via wire nuts to a section of 20 gauge 2 pair

25 pair telephone

And 20 gauge10 wire instrumentation cable.

It was very close to a archaeological listing of obsolete communication technology.
We did not however, find cans connected with string: the walls were thin and I believe they just used Mark One Shouting  when needed.